gamenight/frontend/src/components/Gamenights.jsx

import React from 'react';

function Gamenights(props) {

  let gamenights = props.gamenights.map(g => 
    (<li>{g.game}</li>)
  );

  return (
    <ul>
      {gamenights}
    </ul>
  );
}

export default Gamenights